Title: Soft conductive polymer dry electrodes for high-quality and comfortable ECG/EEG measurements
Authors: Chen, Yun-Hsuan
Op de Beeck, Maaike
Vanderheyden, Luc
Vanstreels, Kris
Vandormael, Herman
Van Hoof, Chris
Issue Date: 11-Jul-2014
Publisher: Trans Tech Publications
Host Document: Advances in Science and Technology vol:96 pages:102-107
Conference: CIMTEC 2014: 6th Forum on New Materials edition:6 location:Montecatini Terme date:15-19 June 2014
Abstract: Wet gel electrodes are widely used for ECG/EEG monitoring, their low impedance results in
high-quality signals. But they have important drawbacks too, such as time-consuming electrode
set-up for EEG followed by a painful removal, skin irritation by the gel and signal degradation due to
gel drying. Hence various dry electrode types are investigated, such as hard metal electrodes with low
impedance but limited patient comfort/safety. We focus on flexible conductive polymer-based
electrodes to combine low impedance, user comfort and safety. The composition of the conductive
polymers is optimized to improve various properties such as conductivity, which directly affects
signal quality and sensitivity to motion artifacts, and mechanical properties of the electrodes,
important with respect to patient comfort. Electrode impedance and ECG/EEG signal recordings are
evaluated using various polymer compositions and compared to wet gel electrode results. Additive
optimization to improve processability of the conductive formulations is performed by dedicated flow
studies, and will result in a high electrode fabrication yield. Very promising results are obtained
regarding impedance, EEG/ECG signal quality and user comfort.
Publication status: published
KU Leuven publication type: IC
Appears in Collections:ESAT - MICAS, Microelectronics and Sensors

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